CT AORTIC ANGIOGRAM

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About The Test

A CT AORTIC ANGIOGRAM is a quick, non-invasive scan that maps the aorta from chest to abdomen in sub-millimetre detail. At Cadabams Diagnostics, we use 128-slice dual-source CT scanners that complete the exam in <10 seconds, delivering 70 % less radiation than older machines. Whether your doctor wants to rule out an aortic aneurysm or plan a stent, our same-day reporting keeps your treatment moving.

What is CT Angiography (CTA)?

CT angiography combines X-rays and iodine-based contrast dye to create 3-D pictures of blood vessels. When the scan focuses on the body’s largest artery, it is called a CT AORTIC ANGIOGRAM. The test shows:

  • Aortic diameter (normal <3 cm)
  • Wall tears (aortic dissection)
  • Blood clots, plaques and post-surgical leaks
    No catheter is inserted into the heart, so discomfort and risk are minimal.

When and Who Needs to Take a CT Angiography (CTA)?

Your cardiologist or vascular surgeon may advise the exam if you have:

  • Sudden chest/back pain (possible aortic dissection)
  • Pulsating abdominal mass (possible aortic aneurysm)
  • Uncontrolled hypertension
  • Family history of aortic disease
  • Pre-operative planning for bypass or stent

List of Parameters

  • Aortic diameter at root, arch, descending and infra-renal segments
  • True vs false lumen in dissection
  • Contrast enhancement uniformity
  • Stent graft apposition and endoleak grade
  • Access vessel tortuosity for TEVAR planning

Why This Test

  • Rule out life-threatening aortic dissection within 20 minutes.
  • Size an aortic aneurysm before it reaches 5 cm surgical threshold.
  • Follow up after stent graft to detect endoleak early.
  • Evaluate congenital anomalies like coarctation.

When to Take Test

Benefits

Benefits of Taking the Test

Painless – only an IV line.
Speed – breath-hold of <10 s; total visit 30 min.
Accuracy – 96 % sensitivity for dissection.
One-stop – calcium scoring included if indicated.
Digital copy – share with any specialist instantly.

Illnesses Diagnosed with CT Aortic Angiogram

  • Aortic aneurysm
  • Aortic dissection
  • Intramural haematoma
  • Penetrating aortic ulcer
  • Coarctation of aorta
  • Takayasu arteritis
  • Post-traumatic aortic injury

Preparing for test

  1. 4 hrs fasting – clear fluids allowed.
  2. Remove metal – zips, belts, piercings.
  3. Wear cotton gown – provided on site.
  4. Bring previous CDs – comparison lowers repeat scans.

Pre-requisites

  • Latest creatinine & eGFR report (<3 months old).
  • List of current medicines – metformin to be paused 48 hrs if eGFR 30-60.
  • Pregnancy status – LMP and beta-hCG if applicable.

Best Time to Take the CT Angiography (CTA)

  • Elective cases: 7 am–11 am (lowest heart rate improves image quality).
  • Emergency: 24x7 availability with on-call radiologist.

Eligibility

Adults >18 yrs with stable vitals.
eGFR >45 (30-45 at doctor’s discretion).
No prior severe contrast reaction.
Pregnancy, uncontrolled hyperthyroidism, acute renal failure.

Procedure for Taking a CT Angiography (CTA)

  1. Check-in – 15 min early; consent form.
  2. IV line – 18 G cannula in right antecubital vein.
  3. Positioning – supine, arms above head.
  4. Scout scan – topogram to plan range.
  5. Contrast injection – 80–100 ml at 5 ml/s; automatic dual-phase bolus tracking.
  6. Image acquisition – arterial phase at 20 s, venous at 70 s if needed.
  7. Post-care – 500 ml oral hydration; observe 15 min for rash.

Caution Before Taking the Test

  • Metformin – stop 48 hrs and restart after 48 hrs post-exam if renal function stable.
  • Beta-blockers – continue unless HR needs lowering.
  • Allergy – inform staff of shellfish or iodine rash; we give steroid cover.
  • Breast-feeding – pump and discard milk for 24 hrs.

Test Results

Results and Interpretations

Finding / ObservationDescriptionGeneral Interpretation / Significance
Normal aortaAortic diameter ≤ 3 cm; no wall tears or clots detected Indicates healthy aortic anatomy and no evident disease
Aortic aneurysmDilated aorta measuring 3–4.9 cm, no rupture signsRequires surveillance and medical management
Large aneurysm or rapid growthAorta diameter ≥ 5 cm or growth > 0.5 cm/year Surgical intervention recommended to prevent rupture
Aortic dissection (Stanford A) Tear involving ascending aorta Emergency surgical treatment necessary
Aortic dissection (Stanford B)Tear confined to descending aorta Usually managed medically unless complications arise

Risks & Limitations

  • Contrast allergy – 1 in 1000; we pre-medicate sensitive patients.
  • Kidney stress – transient rise in creatinine; hydration protocol lowers risk.
  • Radiation – equal to 6 months of natural background; our iterative reconstruction cuts dose by 40 %.
  • Claustrophobia – scanner is open; scan is over in one breath-hold.
    Pregnant women and people with eGFR <30 ml/min are usually ineligible.

Types of CT Angiography (CTA)

  1. CT AORTIC ANGIOGRAM – chest, abdomen or both.
  2. Coronary CTA – heart arteries.
  3. Pulmonary CTA – lung arteries for PE.
  4. Run-off CTA – legs for peripheral artery disease.

FAQs

Does a CT AORTIC ANGIOGRAM hurt?

No. You feel a brief warm flush when contrast goes in.

How long does the whole visit take?

30 minutes—15 min preparation, 5 min scan, 10 min observation.

Can I drive home afterwards?

Yes, unless you took sedation for claustrophobia (rare).

Is the radiation dose safe?

We use dose-reduction software; risk is negligible compared with missing a dissection.

What if my creatinine is borderline?

Our nephrologist reviews the case; hydration protocol or alternative MRI may be offered.

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